System for controlling moving vehicles comprising multiple signals



Oct. 13, 1931.

P. J. SIMMEN SYSTEM FOR CONTROLLiNG MOVING VEH ICLES COMPRISING MULTIPLESIGNALS 4 Sheets-Sheet Original Filed March 13 1915 f 0 mm Inventor: bflzlhw I Y amt} Atte JMM MIL ' Oct. 13, 1931. V P. J. SIMMEN SYSTEM FORCONTROLLING MOVING VEHICLES COMPRISING MULTIPLE SIGNALS Original FiledMarch 13, 1915 4 Shepets-Sheet 2 wlggzg 1 1% S ad. dam/um,- Inventorf?Attest: 41am 7/ Ma y Adj:

Oct. 13, 1931. P. J. SIMMEN SYSTEM FOR CONTROLLING MOVING VEHICLESCOMPRISING MULTIPLE'SIGNALS Original Filed March 15, 1915 4 Sheets-Sheet3 Atty 0d. 13, 1931. $|MMEN 1,827,406

SYSTEM FOR CONTROLLING MOVING VEHICLES COMPRISING MULTIPLE SIGNALSOriginal Filed March 15 1915 4 Sheets-Sheet. 4

Attest: fad d Inventor:

did W by @amg the parts aswill be more fully" 'herei iafter v v p idltions are'in'dicated on thecanthe permijS-J Patented 0a 13, 1 31 PAULsIMMEN; or E EN, NEW YORK-.ASSIGNQREQSlMMENAUTOMATiC SIGNAL 'conrnn'Y,@EEDEFN, NEW YQRK', a cearonarroncr' ABJZ'QNA f v c sy wmmmd qmm jg/roviim vnnrcnns cemaama mmpm 1 ebb'liafibniedi we a bis s n 4, 7 inewer-lame a; 11927;.

; This inventionrelatesfto I for consists in the construction andadaptaticnozt I am the inventor of railway signal apparat'us',comprising}'aijsuccessibn of "signal rails arranged at intervals alongthe railway,- means for energizing such. rails; positively 'or negrammesdeenergizing: them, controlled from switches preferably located at acentral point, as train" dispatchers of fice, means "forinterlocl'ringthe switches under certain conditions to promote safety;-

fclear anddanger; or clear, caution and danj ger; signals, carried on acanmoving along r the railway, and which signals are" actuated orcont-rolled as. electrical impulses are re-' ceived or not receivedthrorighthe-sighal rails ;jfa; holding circuit {on the car energizedfrom a local battery whereby any particular.

signal on the car setup by contact with the signal rail ismaint'aineduntil thecar reaches another s gnal ra l; r tOgGthQIflWlth "properelectrical connect onsanddevices not neces sary nowxto be. described 5I, am alsotheine. 1

ventor of an, automatic-speed controlling ap= paratus comprising meanson a fear for in; dicating its actual speed and means far indicating apermissible speech the latter being set into operation :When dangerconditions signal rails or certain electrical devices 011 thecar. This.apparatus'is so arranged that when the permissive speed indicator isactuated it moves in effect to'generate aspeed Y reducing curve and y atall. points along such curve the operator muselmep the actual speed ofthe vehicle below the indicated permissible, speed or throughappropriate mechanism the brakes on the car'jare setito retar'ditsmot-ion.

V This apparatus is also accompaniedflbyvart ou's electrical andmechanicaladjuncts not necessary to be described in this connection. Thecbgfe ct cfthe presentinvent-ionl isto-sc' combine the described signalsystem and speed controlling j device withother I mecha- I nisin'and'appliancesthat when aclear signal a utomatically controlling thejspeedof a I v'e f' 'hiclemoving along a-iailway,*and its novelty on'the car.I H g 1 'Figu-re 3 illustrates the positions" of "the, same parts when adanger signal hasbe'enjn- I dicated on'the car, the permissiblespeedindi-f cator has been moved; and the actual speed indicator hasindicated an. identicalfs'peed and the yehicle retarded; When dangereon;

.s P d. indicator; does'not' 'come into play .u'nlessa maximumindicationse zceeded."'VVhenthis a hap ens, the' b rakes are auto-inaticallyfput01;? v V i Y si've speedindicator is automatically actuated to indicatea constantly diminishing rate of speed which the operator may not'eizceedfV. without the bralre's" being automatically put on. I When a"caution signa-l' is indicated on the car a permissive speed indicatorisauto-i matically moved-t0 a sub-m'axilnum position; and remains thereunless danger conditions are indica't ed' when'it is thenautomaticallyactuated to indicate a'constantly diminishing ratecf-s'peed;* f)r unless clear conditions are indicated whenitisautomatically restoredto itsinitial maximum position F'The'deyices nc ssar to accomplish these purposes-are employed; in combination with"means'for arresting the speed ofthecar at a minimum tions of operationor equipment- There 1s also prcvided a warningsigna l to notify theoperator-on the car that'his actu al speed is I approximating the 1'1imitof his permissible] 'speed'andthere is'also provided sundry otherconve-nient devices as-hereinatter described. I

In thedrawings, there is i l lus'trated a pres;

parts when a clearisignal is indicated'on-t-he ting mechanism to fthepermissiu dica-ting'de iceisinterrupted, "1 v Figure 2 illustrates hepositions *of' the same'parts whena and :the retarding mechanis h s b n:m ated; c

ferred form of apparatus fembodying my invention, thepartsbeing shownm0stlyjin=dia gram for the sake of. promoting" the' clear- "Hess-in thedescription;

{ Figured1. illustrates the 'position Qfthe ca'rjan'd the functionof"thepowei'ftransmit e speed ,in-' 1 caution signal' is indicated ofthe United States issued to me.

Figure 4: is an enlarged sectional detail of the gearing intermediatethe governor shaft and the pinion shaft clutch.

Figures 5, 6 and 7 are enlarged details showing the successive positionsof the permissive speed indicating arm as the governor sleeve flangemoves upward to make and break the circuits through the contact pointson the arm; and

Figure 8 is an enlarged detail of the train pipe air valve and itsconnections.

In the drawings, 1 indicates one of the traction rails of an ordinaryrailway. Along the track at suitable intervals there are arranged signalrails, one of which is indicated at 2, which rails may be at stations orother convcnientplaces. Usually at each station, there are two rails, adistant rail and a home rail. Eachrailis suitably supported andinsulated and is adapted to beenergized positively or negatively ordeenergized by means of suitable switch controlled conductors op-.erated froma central point as a train dispatchers oflice. A generalsystem of this nature is described in my co-pending application forLetters Patent of the United States, Serial No. 866,639, (Patent1,192,235, July 25, 1916), and has been described in connection with anumber of Letters Patent In the drawings for the purposes ofillustration 1 have shown a battery 97 connected to the ordinary andwell known pole changing switch 98 which may be operated in any desiredmanner by red 99 so that the polarity of current supplied to wire 100connected to ramp 2 and to wire 101 connected to rail 1 may be reversedor thecurrent may be entirely cut off.

One of the wheels of a car adapted to move along the railway isindicated at 3, its axle at l, and the ordinary train pipe air valvecontrolling the brake system at 5.

A shoe 6 is hingedly mounted at a convenient place onthe car and isadapted to engage the successive signal rails as it moves along therailway, duringsuch engagement pressing against the spring 7 and'whenout of such'engagment being pressed by that spring against a projectingarm or Contact 8.

hllountedon a car at a suitable place is a polarized relay 10, havingtwo armatures, viz.,- a neutral armature 11 pivotally mounted adjacentto it and which is adapted to touch two front contacts 12 and13 and aback contact 14E,-and a polarized armature 100 adapted to'a'ctuatefingers 15 and 16 to touch contacts 17, 18 and 19 and fingers 150 and160 to touch contacts 151 and 161. A local battery indicated at 20 isalso carried on the car and there are three signal lights, viz., a clearsignal or green light 21, a caution sig nal or yellow light 22, and adanger signal or red light 23.

Also mounted on the car is a centrifugal governor 80, having a shaft 31to which motion is imparted by gears 32 from the wheel axle l. The ballframe 34 of the governor has secured to it a sleeve 35, slidable on theshaft 31 and provided with an annular flange 36. The shaft is alsoprovided with gears 37 and 38, each meshing with a gear 39 secured to ashaft 40, and between the gears there is arranged a sleeve 11, indentedat each end in opposite directions to engage similarly indented annularflanges on the gears 37 and 38. By this construction the shaft 40 isalways rotated in the same direction no matter in which direction theshaft 31 is rotated. i

A shaft4l5 is mounted in suitable bearings indicated at 16 adjacenttothe governor. Near one of its ends there is secured to it a speedcontrol cam indicated at 47 and at its opposite end a gear 418' and onthe gear a wing 19. At a convenient point on the shaft there is provideda sleeve 50 carrying a Z- ar'mature 51 and recessed at 52 to co-operatewith a detent 54 on the shaft. A spring 55 and cord 56 serve to restorethe shaft to its original position when. it has been rotated against thetension of the spring. Detents 57 and 58 are adjustably and suitablymounted near the gear 48 and arranged in the circular path of the wing49 to limit the extent of the movement of the shaft 15. The shaft 15 1is moved from the governor shaft 81 and shaft 40 by means of a powertransmitting mechanism including a clutch indicated at 60, a shaft25supported upon and carried by hearing 61, and a pinion 62 adapted tomesh with the gear 18. The clutch comprises a disc 63 arranged within asleeve 64 and which disc is pressed by a spring 65 against a similardisc 66 arranged on one member 67 of a universal joint, the other member68 of which is secured to the shaft 25. The two disc members are adaptedto slip and yield when occasion requires. The bearing 61 is suspendedfrom an arm 69 swung upon a pivot 70 and which arm is the armature of anelectromagnet 71.

Adjacent to the train pipe air release valve 5-there is arranged anelectromagnet 7 5 having an armature 76pivoted at 77 and adapted tocompress a spring78 normally adapted to hold open the valve 5controlling the air pipe 72 leading to the brake system. 80 is a belladapted to be rung through the energize.- tion of an adjacentelectromagnet 81 in the usual manner.

I-lingedly mountednear the cam 47 is an arm 85 carrying a roller 86 withwhich the edge of the cam is adapted to contact. A coil spring 87 servesto promote such contact and to elevate the arm when the cam. is restoredto its original position. At its end opposite the hinge the arm 85 isprovided with a pivoted fork 88 made in part of suitable insulatingmaterial and adapted to pass on each side ofzthe sleeve 85 b uttocontact withth e flange: 36Yif the .parts are relatively 'rnoveda vsufiicient distance. The arm 85 also carries alsupplemental arm 89 madeof insulatlng material and two contact members 90 and 911 7 adapted toco-cper'atewithtwo other contact members .92fandi93carried the fork 88;These contacts constitute a make and: break device and aresoarrangedthat when thefork 88 and .the fian'ge' '36 'touchgeach other and thefork 88 is lifted, a circuit is madethrough the contacts 91and 93andthen'imrnediately thereafter another circuit is brokenthrough the;separation of the contacts 90. and 92 These'contalcts are all adjustablysecured'in anyconvenient lnanner tovary-their relative I positions so.as to vary the-times of making and breaking the circuitm 1' .sTwocoils-95 and96 are mounted control" the 'Z arm'aturc 51, which ispreferably acted I ratusis described; v

v --The signal rail 2' may be positively 01* mg iatively'energiz.ed-i'or deenergized. First let it be assumed that. it ispositivelyenergized, that the shoei'6lhas moved into contact therewithand has been lifted to break the connection be tween the shoe and thecontact 8, A circuit isthen completed fromthesource of energizas t-ionof therail 2 through theshoe'6, wire a,

relay '10, and wiresb and c to the ground.

' \Vhenthe shce-leaves the signal rail, a hold ing-circu'iton theca-rkeeps the relay 1O ener gi'zed from the 'local battery 20. as follows:from the; positive side of the battery: to the wicked, contact17,]finger .15, wire 'e, -armature ll, contact-12, wireg, contact 8,shoe 6,

,wire a, relay 10, wire h', finger 16,contact 18 and. Wire 2' to-th'enegativesid'e of the battery, Atthe same.time-theven'ergization ofthere- 1 lay 10, either frond the-signal rail 2 orthe battery '20,:vcauses "thegreen lamp, or clear signal to jglow because of thefollowing "cir cuit from the positive :side of the, battery '20 to thewire (5, contact 17, fin.gerf;15,':wire; e; armaturell, contact, 13,wire -1 j, 'fing'er 150,

wire 0,;wireb, wire h, finger 16, contact 18, andw1res i and-m tor thenegatlv'e 'side' of thebattjery. 1 The energization of. the relay:10,:'als0' causes the" energiz'ation'of the relay 471;

through the following circuit :fr'orn the posi tive side of the battery20 t0 the wire d, con

1 tact 17,:finger'15, wire e,-armature 11,v cone 72., fingerlti.contact18fand wires [and m to the negative side of the battery. Also iftact12, wiref, ,wiren, relayi'il; wire '0, wire the two contacts 90and*92 touch, -a;circuit fromithe battery 20 energizes .the' electro-1nagnet75, the currentpassing' asfollowsq the negative side of thebattery. i a Thereis also a current established through negative side ofthebattery.

' If the signal rail-2 is 'negativelyenergized,

s1 and mito' the from the positiveside oft-heibatterytothe 1 wire cl,wire '29, contact 92; conta'ct 90, wire g, magnet wire r, and wires therelay l0 istenergized through the same 2 circuit as before, but'the:fingers15: and16 and150 and 160 "of the POlElIlZQChHIHifitIllG,

instead oftaking the position shown inlFigure 1,take' the positionshowninzFigurefi .WVhen thesignalrail'is negatii el yt energ'ized, n

and the shoe 6 leaves.it, the h0lding circuit;

for the relay 10'is as follows: from theposr tive side of'th'e batteryQOtOtheWired, wire] 5 8.0 f

p,.conta'ct 19, finger :16, wire h, wii'efb,relay 10, wire a, shoe 6,contact '8,"wire g', wire 7,

armature 11, wire e, fingers l5 and-wiresi and m to the negative sideofthe battery; This". 7

holding circuit: is the same Z as thatwhich obtained; when 1 thesignal'rail was positively energized 'eiicept that" the flow." of the currentthroughthe coilsfof'the relay in the oppo sitev direction;

f The negative energiaation of the relay v a signalconsistingofthe-yellow light j2 2'to the manner stated [also JCtHSes'f the cautionglow reason of the establishment of the following circuit: frornthepositive'sicle of the battery"20,to the wire d, wire '79, wirc it,

contact 19, finger 16, wireh, wire b,- "wire 0,

,"finger 15,--contact 18, and wires 2' and the coils ant-1 96 as followsbfrom the posi current through the coils will be reversed.

- If the signal rail 2 is deenergized, when I theparts'areas showninFigure 1, the hold ing circuit from the llocalibattery through I I n I*the relay 10, will be broken because the 'concontact..151,:w1re is,green -.l1ght--21,:;w1re. Z',

tactfibetween' the shoe '6. and thecontact dis broken and there isnocurrent from thefsig na'l rail and therefore the circuitthrough therelay is broken, therefore, asthere is no our; 1 I I rent through thisrelay, theelectromagnet as. follows; fromthe positive side'of thehatterytojthe' wire d, conta cft '17, finger 15, wire e, armature 1 1,contact 114, wireaa -red light -2 3,I.w'ire ab, wire c, wireb,wirejh',finger l6,contact '18. and wires t andm'to the nega-tive side of thebattery.

It may also be said that whenever the speed of the train is such thatthe sleeve 35 of the governor is lifted, and causes the flange 36 tolift the fork 88, of the arm 85 then the contacts 91 and 93 will touchand the bell 80 will be caused to ring by reason of the closing of thecircuit from the positive sideof thebattery 20 to the wire cl, wire p,contacts 98 and 91, wire a0, magnet 81, and wires .9 and m to thenegative side of the battery.

The cam 47 represent-s a curve of rates of permissible speeds for thecar. When it is rotated by means of its shaft 45 through the gear i8 andpinion 62 it contacts with the roller 86 of the arm 85 and pushes downthat arm. The actual speed of the car is of course indicated by theposition of the flange 36 on the sleeve'35. When the flange and fork aremoved relatively. towards each other, it will occur if .the movement issufficient that the contacts 93 and 91 will touch to make a circuitthrough the magnet 81 and ring'the bell 80. If the movement iscontinued, so that the contacts 92 and 90 are separated, then theelectromagnet will become deenergized: and the valve 5 will be openedunder the influenceof thospring 78, the air will escape from the trainpipe 72 and the air will be applied to retard the train. If, however,when the bell rings, the operator reduces .his speed so that the flange36 will move downwardly along the shaft 31, then the contacts 90 and 92willnot be separated, and the brakes will not be put on.

Let us suppose that the signal rail is positively energized, then thegreen light or clear signal" 21 will be displayed. 'The magnet 71Will-be energized and the armature 69' carrying the bearing 61 will beattracted so that the shaft 25 will be lifted and the pinion will bemoved out of mesh with the gear 48-. Therefore the permissible speed camwill not be rotated, the arm will remain in its maximum position and theoperator can drive the train as fast as he pleases until its actualspeed causes the flange 36 of the governor sleeve 35 to move so that thecontacts 91 and 93 will touch, when the warning bell will be rung and ifthe speed is further increased the contacts and 92 will be separated sothat the circuit through the magnet 75 will be broken and the brakeswill be put on.

This isequi-valent to saying that solong the speed does not exceed themaximum permissible speed denoted by the position of the arm 85 when thecam 47 has not been rotated, (that is. while the green light or clearsignal is displayed) the speed of the train is entirely under thecontrol of the operator.

Let us suppose that the signal rail 2 is negatively energized. Then, asbefore described, the yellow light or caution signal is displayed. Theelectromagnet 71 still being energized, the pinion 62 will be held outof mesh with the gear 48 just as when the clear signal Was displayed.But, as has been described, the coils 95 and 96 will have becomeenergized. This causes a rotation of the Z-armature 51,. As statedabove,the magnets areso arranged that this is a slow rotation and takesa-nap-v contactwith the fork 88 as it did when the H clear signal wasdisplayed and the cam 47 was at its maximum position. If now the actualspeed approaches the submaximum rate in accordance with the position ofthe cam 47, then the contacts 91 and 93 will be brought together to ringthe bell 80 and the 1iontacts '90-. and 92. separated to put. on theErakes. I

If the signal rail 2 is deenergized, then the red light or danger signalwill be displayed, and the electromagnet 71 becoming deenergized, thepinion 62 will drop into mesh with the gear 458 and cause the immediaterotation of the shaft 45: and cam-- 47, and consequently a constantlydiminishing permissible speed: .1

If the actual speed is not will be indicated. kept under suchpermissible speed, the make and break circuits will be operated asbefore, the bell 80; will ring and the brakes will be put on; V

If the yellow light is. displayed and the cam 4-7 is at itssubmaximumposition, and a signal rail which iszdfieenergized is reached, then themagnet 71 will be deenergized, the pinion 62. will drop'intoi mesh withthe gear 48, and the shaft 45 and cam 47 will be rotated from thesubmaximum position.

When the minimum position of the cam 45'? is reached, indicating aminimum permissible speed, unless such speed is zero, the train canproceed under thecontrol of the operator as long as the minimum is notexceeded. It will be noted that as t'he'cam 47 is moved by: intermediatepower transmitting connections, from the governor shaft, and that thisin turn is rotated from the wheel axle, the train must move a certaindistance before the cam- 47 is rotated from its maximum speed indicatingposition toits submaxirnum speed indicating position, and its minimumspeed indicating position. Just how much these distances are in terms oflinear measure is determined by the size and contour of the edge of thecam and canbe varied to suit different conditions of service. 2;.

While in the foregoing the signal rails have been described aspositively or negatively energized or deenergized by means of suit.-able switch cont-rolled conductors operated from a, central point, as atrain dispatchers ion near- 406 Z'ofiice', will be understood ofcoursethatthey may be energi'zed'and deener'gi'ze'd' in any othersuitable manner as for instance through continuous track circuitswithout departing from-the; principle of'the invention.

lclaimzj H 7 '1. Ini'a railway signalsystcm, signalrailsarrangedalong-the track and adaptedto'be r 'gized.

energized positively'or negatively, or deen- 'ergized, an electroinagneton the vehicle, three signals on the vehicle; connections between themand the electro magnet' whereby one signal is displayedw-hen theelectro-inagnet is positively energized, a secondsignal isdisplayed whenit is negatively energizechland a third'signal is displayed When-it isdeenergiz'ed; a device on the vehicle moving' in accordance with-its-actual speed means where by the vehicle inay'be-retarder lgi deviceon the vehicle to determine a permissible speed for the vehicle andadapted when actuated to move ,i-froni' a higher speed position to alowerspeed position; means for actuating the. permisslble' speed devicefrom the actual speed device through power-transmitting mechanism,electrical connections brought into play to actuate the retarding devicewhenever, the actual speed equals the perinissible speed; and nieansfor'interrupting the function Of" thejsaid power-transmitting mechan smWhenever the electro-magnet on the vehicle isenergized. i

" 2. Ina railwaysignalsysteni, signal rails arrangedalong thetra'ck -andadapted to be I energized positively ornegatively', or "'deenergizedjanelectro-magnet 'ontlie" vehicle, three signals on the vehicle,conne'ctions between them and the electro-niagnet whereby one" signal isdisplayed when the electroanagnet'-is-positively energized,secondsignal'is elis 'played when it' is negatively energized, and athird signal is displayed whenfiit is deenergi'zed; a .device'on thevehicle moving in accordance with its: actual speech means wherebythevehiclemay be retarded; a device on the vehicle i to determine; apermissible speed for the vehicle andiadapted when actuated to move"from ahighei specd positi-on to alower speed position, nieans'foractua-tin'g'tlie perlnissiblespecd device from the actual speed*device through power-transmittween'them' and the electro-magnetwhereby'one signal'is displayed when the electro-mag net: i'spositivelyenergized vasecond signal is displayed weenie is negativelyenerglizedi.

and a thirdsignal is displayed whelrit is deenergized, adevice onthevehicle moving in accordance with its act'i'ial speed;- means wherebythe vehicle maybe ,retardedg'a device on the vehicle"tO determine apermissiblev speed for the-vehicle and adapted when actu e atedto' movefrom a higher speed position to: a lower speed position, means for Mmeing the permissible speed device fromthe actual speed device"through-powei transmifi ting mechanism," electrical 'connectlonssofbrought into play to actu'ate theretardingde vice whenever the?actual speed equals the permissible speed, and means for interrupt ingthe; function of the' saidl power-transmit? ting mechanism whenevertheelectro-magnet on the vehicleis cnerglzed, in comb nation witha localholding circuit '0n:th'e, veh1cle adaptedautomaticallytoJ-maint'ain'theieleg tie-magnet in the same electrical condition;

which had been produced by the impulse received from the signalrailuntil the vehicle reaches-another signal rail;-

' 41 In a railway signal sstem; signalirails I arranged alongthe track'and adaptedito "be energized positively; ornegatively, or m; be

deenergized, an electro-magnet' on the vehicle,

a clear signal adapted to be displayed-when the ele ctro-magnetispositively energized; a

caution signal when it isgnegativelyi ener gized, and a dangerslg'nahw-hen itis-"deenergized, means on" the A vehicle adapted todetermine its actual" speed" and o a. brake in combination withafljde'vice' on the vehicle adapted to determine a permissible jsp'e'ed'therefor; power transmitting connections between such device" and therunning 'gearof the vehicle, and I means for interrupting the "letfunction of such connections whenever. the

electro niagnet is energized and' maintaining f suchfunction whenever itis 'deenergized- Inan apparatus of" the character" de scribed, a brakea'nactual' speed? device, a permissible speed device, meansautomatically adapted when the actual speed exceeds the permissiblespeed to bring the parts'tfo adapted to move the permissible speeddevice to a-maximum positlonor aipredetermined sub-maximum position andmaintaining it at the-latter position according'j a's clear or cautionconditions obtainalong thetra'ck;

6 In an apparatus of thefcharacterjde 1-15 gether to actuate the brake,and means 7 scribed; afbrake, an actual speed: device, a i

permissible speed device, means automatically adapted when the'actuallspeed exceeds the' permissible speed to bring the partsto gether.to' actuate the brake, and 'means 7 pt d to m wi Permiss ble pee devicetoxa Inaximum' position or a sub-maximumposition according'asclear orcaution conditions obtain along the track, in combination with a warningsignal, and means for automatically actuating the signal before thepermissive speed indicator is moved to its sub-maximum position.

'7, In a device of the character described, a permissible speed deviceand two optional means for respectively bringing it to a maximum orsub-maximum position according as clear or caution conditions obtainalong the track.

8. In a device of the character described, a permissible speed deviceand two optional means for respectively bringing it to a maximum orsub-maximum position according as clear or caution conditions obtainalong the track, both optional means being automatic.

9. In a railway signal system, signal rails arranged along the track andadapted to be energized positively or negatively, or to be deenergized,an electro-magnet on the vehicle, a clear signal adapted to be displayedwhen the electro-magnet is positively energized, a caution signal whenit is negatively energized, and a danger signal when it is deenergized,means on the vehicle adapted to determine its actual speed and a brake,in combination with a device on the vehicle adapted to determine apermissible speed therefor, power-transmitting connections between suchdevice and the running gear of the vehicle, and means for interruptingthe function of such connections whenever the electro-magnet isenergized and maintaining such function whenever it is deenergized, incombination with means for setting the permissible speed device at amaximum condition when a clear signal is indicated on the vehicle and ata sub-maximum condition when acaution signal is indicated on thevehicle.

10. In a device of the character described, a permissible speed deviceincluding a shaft, power-transmitting connections between it and therunning gear of the vehicle, clear, caution and danger signals, meansfor interrupting the function of the power-transmitting connections whenclear and caution signals are displayed and restoring such function whena danger signal is displayed, and

means for setting the permissible speed de vice at a maximum when aclear signal is displayed and at a sub-maximum when a caution signal isdisplayed.

11. In a device of the character described, a permissible speeddeviceincluding a shaft, power-transmitting connections between it and therunning gear of the vehicle, clear, caution and danger signals, meansfor interrupting the function of the power-transmitting connections whenclear and caution signals are displayed and restoring such function whena danger signal is displayed, and means for setting the permissiblespeed device at a maximum when a clear signal is displayed and at asub-maximum when a memos caution signal is displayed, in combinationwith means for arresting the revolution of the shaft when a minimumsetting has been arrived at.

12. The combination with a vehicle of a shaft rotating in accordancewith its actual speed, a permissible speed device including a shaft anda cam revolving therewith, powertransmitting connections between thefirstnamed shaft and the second, means for normally interrupting thefunction of such connections, means for restoring such functionsgoverned by conditions outside of the vehicle, a stop for limiting themovement of the cam shaft, and a slipping device in thepowertransmitting connections whereby when the cam shaft has revolved apredetermined distance and its rotation is arrested the firstnamed shaftmay continue to revolve.

13. The combination with a vehicle, of a permissible speed device, andtwo means for effecting the operation of the permissible speed device,electro-magnets carriedby the vehicle for controlling said two means,one means adapted to secure the rotation of the device from a maximumpoint and the other means adapted to secure its rotation from asub-maximum point.

14. The combinationwith a vehicle of a shaft rotating in accordance withits actual .3

transmitting connections between the firstnamed shaft and the second,means for normally interrupting the function of such connections, meansfor restoring such functions including an electro-magnet, and means forenergizing it both inside of and outside of the vehicle, and means forstopping the rotation of the cam shaft after it has been moved apredetermined distance to a minimum speed condition.

15. The combination with a vehicle of a shaft rotating in accordancewith its actual speed, a permissible speed device including a shaft anda cam revolving therewith, means for actuating the latter shaftincluding power-transmitting connections between the firstnamed shaftand the second, and two means for controlling the operation of thesecond shaft, both means being controlled from electro-magnets carriedby the vehicle, one means adapted to secure the rotation of the camshaft from a maximum point and the other means adapted to secure itsrotation from a sub-maximum point, and means for stopping the rotationof the-cam shaft after it has been moved a predetermined distance to aminimum speed position.

16. The combination with a vehicle of a shaft rotating in accordancewith its actual speed, a permissible speed device including a shaft anda cam revolving therewith, powertransmitting connections between thefirst named shaft and the second, means for nor- 'mallyiinterruptingathefunctions of such con- IIGCtIOIlSyHlEBZIiHS fOIZIGStOIlIlg suchfunctions includingan electro-magnet, and means for energizing it bothinsideof andoiitside of the vehicle and; .means for: restoring: the camshaft automatically tolits original position Wheneven the functions of;its povver tra'nsmittingzniechanism:are interrupted,

- 17The. combination with avehicle, of a shaft rotating in accordancewith. itsactual speed,aip'ermissible speed device including a shaft andcam .i-rezvelving' therewith, means for actuatingthejlattershaftincluding poyver-t-ra-nsmitting; connections between :the firstnamed shaft and the sec.ond ,:and two means for controllingthevoperation' of the second shaft, both means being controlled fromelec- V tro magnets c-a-rried by the vehicle, one means adapted to'securethe rotationof ,thefcam shaft from a maximum point and the othermeans adapted to secure its; rotation from a subsmaximum po1nt,'andmeans for restoring the foam shaftautomatically to its original positionWhenever the functionsfof its powers t rans-mittingnmchanism areinterrupted:

18; Theucombination' want vehicle of a shaft rotating in accordance Withvits actual speed, a permissible speed device includinga shaft anda camrevolvlng therevvlth, power-' transmitting connections between thefirstnamed 'shaft and. the second, means for normally. interruptingtliefifunction of such con;

nections, means for restoring such functions includnig; an'electromagnet and means for energizing itboth. inside and outsideof thevehicle, means for stopping the rotation ofthe camshaft after it hasbeen moved a predetermined distanceto' a minimum position, andmeans-forrestoring the cam shaft automatica'llyi to it'soriginalposition Whenever the functions of its power-transmitting.mechanismarexinterruptedv-i y 19.Thecombinationwitha vehiclev of ashaft rotating in-accordance with itsactual speed, azpermissible speeddevice including a I shaft and a cam revolving therewith, means foractuating the latter shaft including: pow" er-transmitting con'nectionsbetvveen the :fir'stnamed shaft and the secenamndtwo" meansforcontrollingftheoperation of the second shaftieboth" means controlledfrom .el ectro-. magnets carried "bythe vehicle, i one means adapted tosecure the rotation of the cam v shaft 'from-a maximum point andtheother means adapted tosecure' its rotation from a sub-max mum point, Imeans for stopping the rotationbfthe cam shaft after t has been I moveda predetermined distance toaminimum'speed position, and-means forrestoring automatically set speed of the vehicle,ifurther means; on the.I

vehicle driven by a the running 1 gear: thereof Whichmoves 1n accordanceWith the permlss his speed of suchvehicle, means normally inactiveadapted to retard the movement} of the Vehicle, means adapted to actuatesuch ingxin accordance with its for automatically setting. thepermissive mum position. Y

21. A system of control speed means. :at: a maximum i and: sub-maXi--for moving vehicles,,comprising means on'the vehicle which movesinaccordance With the actual speed of the veh1cle,.- further means 'ontheavehicle driven-by the runningigear thereof which -moves-'1naccordance wlth the IPGI'HHSSIVG speed of such vehicle, means normallyinactive adapted to'ret'ard the movement of the vehicle, meansadapted-to actuate such retarding means when the means on the ves hiclemovin'glin'accordance with its actual:

speedis moved relatively tothe'means mov p ermissive speed beyond apredetermined llmit', and means retarding "means-when the means on'theve-' Y hicle 'inoving' inaflaccordancewithv its actual speed:1s.movedrelatively'to'the means mov-i 111g, 1n accordancewithitspermissive speed 11 V be'lyon'daa Ipredeterminedv limit, means for zsition,. comprising electro-magnets"adapted to' b'e energizedor.de'energized automatically corresponding'; to danger or safety ind cationsonithe vehicle. i is 22. In ai'system for the control of moving Vtin the permissive" speed means at a m ammum and sub-maximum:p'ovehicles, an actual speed device, a permissive speeddevicemoved;therefrom byan inter v r mediategearlng,111'fiOHlblllfiLtlOllNVltllHlBlIlS I for; automaticall tliroivinm the,rearin into "mesh. when certain conditions are received i or obtain onthe vehicle, meansfor automatically throwing it' outfof ine'sh, andother means for causing the operation of tl'ie'permissive speed deviceWhen certain other conditions are received or obtain on the vehicle;

In a system for theycontr'rol of moving vehicle's, an actual speeddevice, a permissive .sp'e'e-d device moved therefrom an intermediategearing, in comblnatlonwlth means I for automatically moving thepermissive speed" device from amaximum toa' sub--'maximum'positiom'which means include an electro-ma'gnet, and means'for holding it at such positionuntila' change in the electricalcondition of such magnet occurs and further '120 means for movingit"automatically t'o its original: positionfor to a minimum positiondepending upon the nature of such change; r

24; In a system: for the control of movlng vehicles, an actual speeddevice, a permissive speeddevice moved therefrom by an inter j mediategearing,inclu-ding a gear and pinion,

'Ineans for automatically moving the v permisslvei speed devlce'from-amax-imum to a sub;

maximum "position when caution conditions f obtain on the vehicle, andmeans for holding it at such sub-maximum position until dangerconditions obtain, and further means then adapted to move the pinioninto mesh with the gear.

25. In an apparatus of the character described, a permissive speeddevice adapted by its movement to establish a predetermined graduallyreduced speed, means for moving it from a maximum to a minimum position,an electro-magnet controlling said means, means for effecting the motionof the device to an intermediate position, and a second electro-magnetcontrolling the last mentioned means.

26. The combination with a vehicle and a permissive speed device carriedthereby, of means for effecting the operation of the device to move saiddevice toward a minimum speed position when danger conditions exist, andmeans for limiting such movement to a point short of the minimum speedposition when caution conditions exist.

27. The combination with a vehicle and a permissive speed device carriedthereby, of means for effecting the operation of the device to move saiddevice toward a minimum speed position when danger conditions exist, andother means for moving the device toward the minimum speed position whencaution conditions exist, the range of operation of the latter movingmeans being less than that of the first mentioned means.

28. The combination with a vehicle, of a permissible speed device, twomeans for moving the device, said means respectively having differentlimits to the amount of movement imparted to the device, and means forcausing the operation of the device by one or the other of said movingmeans accordingly as different conditions exist.

29. The combination with a vehicle, of a permissive speed device, ameans for moving the device between maximum and minimum speed positions,another means for giving a less extended range of movement to the device, and means dependent on danger conditions for setting the firstmeans into action and dependent 011 caution conditions for setting thesecond means into action.

30. The combination with a vehicle, of a permissive speed device, meansfor moving the device between maximum and minimum speed positions,another means for moving the device between such maximum speed positionand a limit that lies between said maximum speed indicating position andsaid minimum speed position, and means dependent on danger conditionsfor setting the first means into operation and dependent on cautionconditions for setting the second means into ac tion.

31. In a system of control for vehicles movable upon a trackwa-y, incombination: a vehicle; a trackway; means on the vehicle conditioned bymeans on the trackway for establishing a maintained maximum permissiblespeed and a maintained sub-maximum permissible speed for the vehicle andmeans for utilizing said first mentioned means for controlling thevehicle.

32. In a system of control for vehicles movable upon a trackway; incombination: a vehicle, a trackway; means on the vehicle conditioned bymeans on the trackway for establishing over different portions of thetrackway different maintained maximum permissible speeds for the vehicleand means for utilizing said first mentioned means for controlling thevehicle.

. 33. In a system of control for moving vehicles, in combination: avehicle; means on the vehicle conditioned by means on the road way forestablishing on the vehicle different persisting maximum permissiblespeeds for the vehicle and means for utilizing said first mentionedmeans for controlling the vehicle.

34. In a system of control for moving vehicles, in combination: avehicle; means on the vehicle driven by the running gear thereof whichmoves in accordance with actual speed thereof; means on the vehicle forestablishing different predetermined persisting permissible speeds;means on the roadway for actu ating said last named means; a brake andmeans for actuating said brake by the co-operation of the first and thesecond mentioned means.

35. A railway system embodying means for producing a clearance currentfor a maximum speed and a different current for a submaximum speed,means biased to retard the train and thrown out of operation by saidclearance current and means for producing a sub-maximum speed responsiveto said submaximum speed current.

36. In a system of control for vehicles movable upon a trackway, incombination: a vehicle; a trackway; means on the vehicle conditioned bymeans on the trackway for estab lishing a maintained maximum permissiblespeed and a maintained sub-maximum permissible speed for the vehicle;means for at times connecting said first mentioned means to the runninggear of the vehicle to be operated thereby so as to establish agradually reducing maximum permissible speed and means for utilizingsaid first mentioned means for controlling the vehicle.

37. In a system of control for vehicles movable upon a trackway, incombination: a vehicle; a traokway; means on the vehicle conditioned bymeans on the trackway for establishing. over different portions of thetrackway different maintained maximum permissible speeds for thevehicle; means for at times connecting said first mentioned means to therunning gear of the vehicle to be operated thereby so as to establish agradually reducing maximum permissible speed means for controllingthevehicle.

times connecting said-first mentioned means to the running gear of thevehicle to be oper i atedi thereby so as 'to establish a graduallyreducing maximum"permi'ssible speed end means for utilizing' said fi'rstmentioned; I p A i 'movablerupon a trackvvay; in combination; a

' vehicle; a 'trackvvaypmeans on the vehicle conditioned by means on thetrackvvay .for' i 1 initia-lly:establishin over-different portions i o r39; In: a system of control formoving{'ve liicles,'in combinationjavehicle; a roadway; means on the vehicledriven by the ,running gearthereof which moves in accordance with the actualfspeed thereofyme'ansOHftlIB VF hicle for establishing different predeter mined persistingpermissible speeds; means 'forat times connecting "said se'condmentioned means to therunning, gear of the vehicle to be operatedtherebyso as'to e'stab-fl:

lishja gradually reducing maXimum permisslble speed; means on theroadway for actu ating said second andthirdnamed I means v a' brakeandmeans for actuating said 'bral re t bythe cooperation of the firstandit'he'fsecf ondimentione'dmea'nsg 40. In a'system of control for'vehi cles movable upona tra'ck'way in.combinatio n; a

vehicle "a trackvvayv for the [vehicle means on' the vehicle adapted tobe conditioned for establishing a maintained maximum permis sible speedandamaintained subm aXinium permissible speed for thevehicle';"electro-f V o p h vehicleto beoperated thereby so as, toestab-. lish" a maximum permissible speed gradually reducing from any,predetermined persist ing permissible speed according to which isinitially established; means on the roadway -for1actuating said secondand third named means: a brake and means for actuatingsaidi brake bytjthe cooperation-of the firstv'and second mentioned means 1 magneticmeans o'n'thevehicle for conditioning the first mentioned means meanslonthe trackway for overnin the secondf men; tioned means; means for at,times connecting said first mentioned means to the'running gearof thevehicle to'be operated thereby so as to establish agraduallyfreducingmaxi-a mum permissible speed and means for utiliz ing said firstmentioned means for control? lingthevehicle. v v

41. In a system for automatically controlling the speed of railwayvehicles; in com: bination automatic speed controlled appa ratus onthevehicle including 1 a permissive speed element 'adapted to'assumedifferent 7 nitial conditlons; means tending to cause saidpermissiveispeed element to assume a predetermlned 1n1t1al condition; anelectro-,

' magnetic device operable to cause'said perl missive speed element tochange toanother initial condition; a circuit for controlling saiddevice and means partly on the vehicle and partly along the track forcontrolling said circuit. V

42. In a system vehicle; .a trackway; means on the vehicle of controlfor vehicles movable upon a trackW'a-y, 1-n combination; a

initially establishing a; maintainedfma Xt mumipermissible speed or amaintainedis'ub- V maximum permissible speed for the veh cle; 1-

meansfor at times connecting sa1dfirst1nena.

tioned' means "to; the running gear of the. ve: t

hicle tobe operatedthereby soas'to. estab-I lish a maximum permissiblespeed gradual? ly reducing from either-of the initially establishedpermissible speeds according to hich-is initially established and meansfor utilizing-said first mentioned means for con trollingithe vehicle. grgl 43.'--,I-'n' a system of control forgvehicles of the trackway 'dierent maintained maximunr permissible. speeds for the vehicle; I

means for at times'connecting said first mentioned means to therunning'gear ofthe ve hide. to, be operated thereby so as to"estab, lisha maximum permissible speed gradual 1y. reducing from any initiallyestablished maintained maximum permissible; speed according to fWhich isinitially established and means for utilizing said firstmentioned means;for, controlling the vehicle. t

.igti 'ln- ZtfSYSllGIIl of controlfor moving've-i: 3h'1cles,*1n-c0mb1nat1on; a vehicle; a roadway means on the vehl'cledrlven by'the-running geargthereof which moves in accordance with theactual speed therof; means onithe vex,

45 "system; of control tro-magnetic' meansjon the vehicle; :forcondigearifof the vehicle to be operated thereby so as tofestablishmaximum permissible speed gradually redu ing fr meitherof the, initialflyestablished permissible speeds according for vehicles lmova'bleuponatrackvvay, in combination; x ag vehicle z a fftrack'way =forfthevehicle; means on thevehicle adapted tobe conditioned for initiallyestablishing a maintained maximum i I permissible speed and a maintainedsubmaxi V f .rnur'n permissible speed for the vehicle ;-elec1-" toWhichislinitially established and m'eans' for 'utilizingtsaidfirstmentioned means for "controlling the vehicle. A: I

restrictive trafiic conditions is received for preventing operation ofsaid brake-applying means for a variable distance of vehicle traveldepending on the speed of the vehicle.

47. Railway traiiic controlling apparatus comprising means on a vehiclecontrolled from the traclrway "for applying the brakes if the vehicleexceeds a fixed sub-maximum speed limit under restrictive trafficconditions, and slow-acting means on the vehicle set into operation whena restrictive indication is received for preventing operation of saidbrakeapplyingmeans for a variable distance of vehicle travel dependingon the speed of the vehicle.

48. Railway traffic ccntrolling apparatus comprising means on a vehiclecontrolled from the traclrway and operative when a restrictiveindication is received to determine a fixed sub-maximum speed limit, abrake application device controlled by said means and set into operationif the vehicle'exceeds said speed limit, and apparatus interposedbetween said. means and said device for preventing application of thebrakes for a variable distance of vehicle travel depending on the speedof the vehicle.

l9. Railway traffic controllingapparatus comprising means on a vehiclecontrolled from the trackway for giving a caution indication and adanger indication, apparatus on the vehicle for applying the brakes ifthe vehicle exceeds a fixed sub-maximum speed when the cautionindication is received, and a lower fixed sub-maximum speed when thedanger indication is received, and slow-acting means set into operationwhen either of said indications is received for delaying the brakeapplication for a variable distanceinterval of vehicle travel dependingon the speed of the vehicle.

r 50. Railway tr tfiic controlling apparatus comprising means on avehicle controlled from the traclrway for determining a fixedsubmaxiinum speedlimit under restrictive traffic conditions, slow-actingapparatus set into action when a restrictive indication is received onthe vehicle and requiring for its operation a variable distance ofvehicle travel. depending on the speed of the vehicle, and a device onthe vehicle for applying the brakes when the operation of saidslow-acting apparatus is completed if the speed of the ve hicle thenexceeds said fixed limit. A

51. Railway traffic controlling apparatus comprising a railway vehicle,means thereon controlled by. trafiicconditions in advance for imposing afixed intermediate speed limit and a fixed low speed limit, brakeapplication apparatus controlled by said means for applying the brakesit the vehicle exceeds said speed limits, and slow-acting meansinterposed between said means and, said apparatus for delaying theoperation of said brake application apparatus for a distance intervalwhich depends upon the speed of the vehicle.

52. Railway traffic controlling apparatus comprising a vehicle,-meansthereon responsive to dangerous traffic conditions in ad- Vance forimposing a fixed speed limit on the vehicle, brake application apparatuscontr'olledby saidmeans for applying the brakes if the vehicle exceedssaid fixed speed limit, and slow-acting means interposed between saidmeans and said apparatus for preventing application of the brakes for avariable distance of vehicle travel depending on speed.

53. Railway tl'flfilCflOIltlOlllIlg apparatus comprising means on avehicle controlled from the trackway for permitting maximum speed underclear trai'iic conditions, a submaximum speed underpredeterminedrestrictive conditions and a minimum speedunder other predeterminedrestrictive conditions and for applying the brakes if the vehicleexceeds a fixed sub maximum speed under one predetermined restrictivecondition or a minimum speed :under the other predetermined restrictivecondition and '=lovv-act ing means on the vehicle set into operationwhen an indication of sub-maximum speed predetermined restrictiveconditions or an indication of minimum speed restrictive conditions isreceived for preventing operation of said brake applying means for avariable distance of vehicle travel depending on the speed of thevehicle.

In testimony whereof I ailix my signature.

' PAUL J. SIMMEN.

